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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A 1.5-V-100-/spl mu/W /spl Delta//spl Sigma/ modulator with 12-b dynamic range using the switched-opamp technique
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A 1.5-V-100-/spl mu/W /spl Delta//spl Sigma/ modulator with 12-b dynamic range using the switched-opamp technique

机译:使用开关运算放大器技术的1.5-V-100- / spl mu / W / spl Delta // spl Sigma /调制器,动态范围为12-b

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摘要

The design and implementation of a very low supply voltage/low power /spl Delta//spl Sigma/ modulator is presented. It is based on the switched-opamp technique, which allows low voltage operation with a standard process and without voltage multiplication. The design methodology is illustrated with a second-order single-loop /spl Delta//spl Sigma/ modulator. The chip is implemented in a 0.7-/spl mu/m CMOS process with standard threshold voltages. The power supply is 1.5 V and the power dissipation is only 100 /spl mu/W. The measured dynamic range in the speech bandwidth of 300-3400 Hz is 12 b. The total harmonic distortion (THD) is lower than -72 dB.
机译:提出了非常低的电源电压/低功率/ spl Delta // spl Sigma /调制器的设计和实现。它基于开关运算放大器技术,该技术允许采用标准工艺且无电压倍增的低电压操作。用二阶单环/ spl Delta // spl Sigma /调制器说明了设计方法。该芯片采用0.7- / spl mu / m CMOS工艺以标准阈值电压实现。电源为1.5 V,功耗仅为100 / spl mu / W。在300-3400 Hz的语音带宽中测得的动态范围为12 b。总谐波失真(THD)低于-72 dB。

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